Lesser Noctule vs Lesser Siren

Nyctalus leisleri compared with Siren intermedia

Key Differences

• Lesser Noctule is Endangered while Lesser Siren is Least Concern.

Taxonomic Classification

Rank	Lesser Noctule	Lesser Siren
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Amphibia (Amphibians)
Order	Chiroptera (Bats)	Caudata (Caudata)
Family	Vespertilionidae	Sirenidae
Genus	Nyctalus	Siren
Species	Nyctalus leisleri	Siren intermedia

Evolutionary Relationship

Lesser Noctule and Lesser Siren share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Lesser Noctule

EN — Endangered

Lesser Siren

LC — Least Concern

Physical Characteristics

Attribute	Lesser Noctule	Lesser Siren
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Lesser Noctule

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Belgium, Denmark, Luxembourg, Sweden, and Ukraine. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Lesser Siren

Habitat

Typically found in freshwater habitats, moist forests, and wetlands.

Range

Distributed across Belgium and Mexico.

Shared Countries

Both species can be found in 1 countries:

🇧🇪 Belgium